Electric-lamp socket.



D. II. WALIIIIG.

ELECIHIC LAMP SOCKET. APPLICATION FILED IAN. 29, 1917.

a'ented July 3, HMT,

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DAVID A. WALLNG, OF MERRYVILLE, LOUISIANA.

ELECTRC-LAMP SOCKET.

manera.

Specification of 'Letters Patent.

Patented July 3, 1931*?.

Application led January 29, 1917. Serial No. 145,251.

To all whom tt-"may concern.

`Be it known that I, DAVID A. citizen of the United States, Merryville,in the parish of Beauregard, State of Louisiana, have invented a new anduseful Electric-Lamp Socket; and I do hereby declare the following to bea full, clear, and eXact description of as will enable others skilledinthe art to which it appertains to make and use the same.

This invention relates to a new and use- WALLING, a residing at fulelectric lamp socket and a switch there- `is to provide a simple, l

ed to the other side,

1n, ,and one of the objects of the invention device of this kind whichis eliicient, and may be inexpensively manufactured.

A further object of the invention is to provide a lamp socket comprisingan outer metallic shell and an innermost porcelain core, there beinginsulating means therebetween, whereby the electrical connection betweenthe lamp and the source of supply may be insulated from the outershell.

A further object of the invention is to provide diametrically oppositelydisposed electrical conductors carried by the porcelain core andprovided with a contact ring spirally arranged, to be engaged by thethreads of the screw end of the lamp, there `being a switch connected toline while one of the conductors is connectin combination with means tothrow the switch in contact with the terminal contact of the screw ofthe lamp,`so as to close the circuit.

y In practical fields, the details of construction may necessitatealterations falling within the scope of what is claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed. ln thedrawiiigs: i Figure 1 is a? View in perspective of the improved lanipsocket, constructed in accordance with the invention, showings portionof the lamp connectedthereto.

191 eral parts of the la parts of the core,` onezof the 55,

Fig. 2 is a .view 1n perspective, the outer shell removed.. n Fig. 3illustrates collective View of the sevp socket excepting the ,outershell disassembled.

Fig. 4 illustrates views of the several separated from the others.

the invention, such' 'is to be noted one side of the 'tion 13 will"the'semi-spherical globular insulating cap showing parts being Fig. 5is a vertical sectional view on line .t3-5 of Fig. 1. Fig. 6'illustrates collective views of the two parts of the outer metallicshell.

eferring more especially to the drawings, l designates thefouter shellof the socket, which shell consists of the two sections 2 and 3, eachsemicircular in cross section. Each section has a semi-sphericalglobular end 4, and the opposite end which is provided with a reducedportion It that the marginal edge portion of the section 2 overlaps thenmrginal edge portion of the section 3, which edge portion 'of thesection 2 is provided with lugs 6 to engage the apertures edge portionof the section C3, thereby holding the two sections together'. Arrangedon theinterior of the outer metallic shell is an insulating shell 8, ofany suitable material, preferably fiber, whichfconsists oiE the twosections 9 and 10. The `section 10 is preferably semi-spherical inshape, to correspond to the spherical globular shaped end of theouter-shell, 'while the section 9 corresponds with and fits the shape ofthe body portion of the outer shell. ln fact, one end ot' the insulatingshell is with the reduced ends of thc two sections o t' the outer shell.A porcelain core 11, consisting of the two sections 12 and 13, isarranged within the insulating shell, so that the secengage the interiorsurface oi section 10, while thev section 12 of the core will fit theinterior of the enlarged cylindrical part of the insulating shell S. Thescction 12 of the core comprises the two parts 111 and 15, which aresemi-circular in cross section. The dat .face of the part 14 is providedwith two grooves 16 andl 17, the grooves 16 extending longitudinally thefull length of said fiat face, while the groove 17 extends substantiallyhalf the length of said flat face. The bottoms of the grooves 16 and 17are provided with recesses 18. The part 15 of the section l2 of the corehas its flat face provided with grooves 19 and 20 (the bottoms of whichhave recesses 21) to correspond and register with the grooves 16v and lwhen the two. parts 14 and 15 of the sec-f 7 of the marginal portions Q4of which are bent, in order to engage the inner surface of the reducedend of the insulating shell. It is to be noted that said conductorstrips or members are diamctrically oppositely disposed, and soldered asshown at 25 to the extremity of one of the end portions 2l is a ring 26,and at a point diametrically opposite the soldered connection, the ringis severed, and the two ends 27 and 28 are disposed off set from eachother and soldered adjacent the extremity of the other end portion 24 soas to dispose the ring spirally, or in other words, screw threadlike, inorder 'to be engaged by the threads of the screw end 29 of the lamp 30.The Hat face of the part' 14 of the section 12, and the flat face of thepartv 15, are provided with diagonally disposed correspondinglysubstantially compound curved grooves 31 and 32, the bottoms of whichhave recesses 33. Arranged in said grooves 31 and 32, is a switch blade34, which is constructed from a sheet of spring steel. This switch bladeis provided with lugs 35 which engage said recesses 33 of said grooves81 and 32, thereby preventing longitudinal slipping of the switch blade.The comluctors and Q3 have lugs 3G, which engage the recesses 18 and 21of said grooves 16 and 17, and 19 and 20, thereby preventinglongitudinalmovement of said conductors. ()ne end of each groove 31 and 32is widenedor enlarged in order to permit the end portion 37 of the switch blade tofreely move. The section 13 of the core has its spherical face providedwith grooves 38 and'39. The wires or leads 40 and 4l enter through theopening 42 of the core section 13, and then engage the grooves 3S and3S). The end of the lead or wire 4t() is connected to the hook 43 of theconductor 22, while the end of the lead orwire 41 is connected to thehook 44 at one end ol' the switch blade 34. A suitable key 15 e :tendsthrough the outer shell, the insulating shell and through the two parts14 15 of the core section 12, and the shank of said key has anenlargement 46, which engages the lateral enlargements 47 of the twogrooves 31 and 32. It is to be noted that when twisting the key in onedirection, causing the enlargement 4G to ride or cam against the switch.blade so as to cause the extremity of the end portion 37 to contact withthe terminal contact 48 of the screw end 29 of the lamp 30, therebyclosing the electric circuit through the lamp. A reverse movement of thekey will open the circuit.

The invention having been set forth, what is claimed as new and useful,is z- `1. A lamp socket and switch therefor, comprising an outermetallic shell, an innermost porcelain core, an insulating shell be.

tween said core and the outer shell, a pair of terminal conductorsembedded 1n sa1d core and having their ends extending be-I yond thecore, a spiral or screw ring connected to the extended ends of saidterminal conductors, to be engaged by the threads of the screw end of alamp, one of said con-l ductor terminals being in circuit with source ofcurrent supply, a switch blade embedded 4in said core .and provided witha yieldable end, and being in circuit with said source of currentsupply, and a rockable key having an enlargement to move said yieldableend ofthe switch blade in contact with a terminal contact of the screwend of said lamp.

2. A lamp socket and switch therefor, comprising an outer metallicshell, and innermost porcelain core, 4an insulating shell between saidcore and the outer shell, a pair of terminal conductors embedded in saidcore and having their ends extending beyond the core, a spiral or screwring connected to the extended ends of said terminal conductors, to beengaged by the threads of the screw end of the lamp` one of saidconductor terminals being in circuit with source of current supply, aswitch blade embedded i'n said core and provided with a yieldable end,and being. in circuit ,with said source of current supply, and arockable key having an enlargement to move said yieldable end of theswitch blade in contact with aterminal contact of the screw end of saidlamp, said conductor terminals and the switch. blade having lugsembedding in said core to prevent longitudinal movement of the saidconductor terminals and the switch blade.

3. A -lamp socket and switch therefor, I

comprismg Aan outer metallic shell, and an -having correspondinglyarranged registering long and short grooves having adjoining recesses,the long grooves extending the full length of the ilat faces of both`parts and the short groove substantially half the' length of said flatfaces, the adjacent faces of said parts having. additional elongatedobliquely arranged grooves having recesses, conductor terminal stripsdiametrically oppositely disposed and being embedded in said long andshort grooves and having their corresponding ends extendedl beyond thecore, said extended ends having a spiral or screw ring to be engaged bythe threads of the screw end of a lamp, said conductor terminals havinglugs engaging the recesses of said long and short grooves, the conductorterminal of the long groove being in cir-l cuit with a source of currentsupply, a

In testimony whereof I have signed my name to this speoiontioliin thepresence of two subscribing Witnesses.

DAVID A. YVALLING.

Witnesses JR. E. WLLING, W. J. CRAFT.

